JP5041434B2 - Hard-to-snow tape for overhead wires and hard-to-snow wires - Google Patents

Description

  The present invention relates to a hard-to-snow tape for reducing icy snow on an overhead electric wire (including an overhead ground wire) and a hard-to-snow wire using the same.

  As one means for reducing the icing snow of an overhead electric wire, it is known to wrap a PTFE (tetrafluoroethylene resin) tape having a property of being hard to be attached to the overhead electric wire in a spiral shape (see Patent Document 1). .

Microfilm of actual application No.2-120046 (No. 4-76213)

However, the hard-to-snow electric wires wound with PTFE tape have the following problems.
1) The PTFE tape wound around the wire is fixed to the wire with a hard snow ring, but when fixed with the hard snow ring, the PTFE tape may be partially damaged and used for a long time. In some cases, the PTFE tape may be damaged due to running of the airborne machine. When the PTFE tape is damaged, it is necessary to perform rewinding, which is problematic in terms of reliability.
2) When a PTFE tape is wound, the heat dissipating property of the electric wire tends to decrease.
3) Since the PTFE tape is electrically insulating, if the potential gradient on the surface of the electric wire increases, gap discharge occurs in the gap between the electric wire and the tape, and the tape deteriorates.
4) Since the PTFE tape is electrically insulative, the corona characteristics of the wire are slightly reduced.

The purpose of the present invention is to provide the 1) to 4) and snow accretion tape flame for overhead conductors which issue to solve, the snow accretion wire using the same.

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The difficult-to-attach snow tape for overhead electric wires according to the present invention has a conductivity when carbon is mixed and black PTFE is impregnated into a glass fiber tape and wound around the overhead wire after the suspension machine travels. It is characterized by applying a conductive adhesive to one side of a fiber reinforced conductive PTFE tape that strengthens the tensile strength and tear strength to the extent that damage such as breakage does not occur and improves the heat dissipation and solar heat absorption properties of the wires. To do .

  The overhead snow wire difficult-to-attach tape configured as described above is used by being wound spirally around the outer periphery of the overhead wire with the adhesive inside.

  Also, the optical fiber composite hard-to-fall snow wire according to the present invention is formed by winding an optical fiber cable in a spiral shape on the outer periphery of the overhead wire, and applying an adhesive to the outer-snow hardened tape for overhead wire as described above. It is characterized in that it is wound inwardly to reduce icing snow and to prevent damage to the optical fiber cable by birds and beasts.

Overhead conductors for flame snow accretion tape according to the present onset bright As described above, tensile strength, since tear strength is high, damage such as during Chunori machine running after wound around the overhead wire hardly occurs, thus long term reliability It is possible to construct a highly snow-resistant electric wire with high characteristics.

The fictitious snow accretion tape flame wires according to the present onset Ming, since it has conductivity, gap discharge is not generated in a state wound around the overhead conductors, there is no deterioration due to gap discharge. Therefore, it is possible to configure a snow-resisting electric wire with higher long-term reliability. Further overhead flame wires snow accretion tape according to the present onset Ming, since the color of the tape is black, the better the heat dissipation of the overhead conductors, it is possible to increase the current capacity, the absorbent solar well Thus, a snow melting effect can also be obtained.

Further the optical fiber composite flame snow accretion wire according to the present onset bright, in addition to the effect as described above can be obtained, it is possible to prevent feeding damage by birds and animals of the optical fiber cable.

[ Related Technology ] FIG. 1 shows a related technology of a snow-resistant tape for overhead electric wires according to the present invention. This difficult-to-attach snow tape 10 for an overhead electric wire uses a fiber reinforced PTFE tape 16 in which PTFE 12 is impregnated into a glass fiber tape 14, and an adhesive 18 is applied to one side of the fiber reinforced PTFE tape 16. . The glass fiber tape 14 is preferably in the form of a woven fabric.

  FIG. 2 shows an example of a hard-to-snow wire using the hard-to-snow tape for overhead electric wires in FIG. This difficult-to-snow-carrying electric wire 20 is obtained by winding the aerial-electric wire difficult-to-attach snow tape 10 shown in FIG. 1 in a spiral shape with the adhesive 18 inside.

In this related technology, the hard-to-fall tape 10 for overhead electric wires is in a state in which the PTFE tape 16 is reinforced with the glass fiber tape 14, so it has high tensile strength and tear strength. When the machine travels, damage such as tearing will not occur.

[Embodiment 1 ] FIG. 3 shows an embodiment of a snow-covering tape for overhead electric wires according to the present invention. This difficult-to-attach snow tape 10 for overhead wires uses a fiber reinforced conductive PTFE tape 26 in which a glass fiber tape 14 is impregnated with PTFE 24 mixed with carbon fine powder to make it conductive. A conductive adhesive 28 is applied to one side of the conductive PTFE tape 26. The glass fiber tape 14 is the same as the related art .

  FIG. 4 shows an example of a hard-to-snow wire using the hard-to-snow tape for overhead electric wires in FIG. This difficult-to-snow-carrying electric wire 20 is obtained by winding the aerial-electric wire hard-to-attach snow tape 10 of FIG. 3 in a spiral shape with the conductive adhesive 28 inside on the outer periphery of the overhead electric wire 22.

  In this embodiment, the difficult-to-attach snow tape 10 for the overhead electric wire is in a state in which the conductive PTFE tape 26 is reinforced with the glass fiber tape 14, so that the tensile strength and tear strength are high. No damage such as tearing occurs when the airborne machine travels.

  In addition, since the hard-to-fall snow tape 10 for overhead wires of this embodiment has conductivity, no gap discharge occurs between the high-voltage overhead wires 22 and, therefore, the tape is deteriorated due to the gap discharge. Disappears. Moreover, since it has electroconductivity, a corona characteristic is also improved.

  Also, since carbon is mixed, the color of the tape becomes black, so that the heat dissipation of the wire is improved, the current capacity of the wire is increased, the solar heat absorption is also improved, and the snow melting effect is also obtained. .

Embodiment 2 FIGS. 5 and 6 show another embodiment of the present invention. In this embodiment, the present invention is applied to a wound optical fiber composite overhead electric wire. That is, the optical fiber composite overhead conductors wound around an optical fiber cable 30 in a spiral manner around the circumference of the overhead wire 22, the overhead conductors for flame snow accretion tape 10 shown in FIG. 3 on the outer periphery, a conductive adhesive 28 inside It is a spiral wound.

With such a configuration, the same effects as in the first embodiment can be obtained, and the following effects can be obtained. In other words, in the conventional wrapping type optical fiber composite overhead wire, since the optical fiber cable is exposed on the surface of the wire, the optical fiber cable is caught by a bird, or it is bitten by a flying animal (musabi, peach, etc.). However, if the configuration as in this embodiment is adopted, the optical fiber cable 30 is protected by the high-strength overhead snow-resistant snow tape 10, so that the above-mentioned damage caused by birds and animals can be prevented. Can be prevented.

  In order to prevent the damage caused by birds and animals on the optical fiber cable, it is preferable to wrap the snow-resistant tape 10 for overhead wires without gaps as shown in FIG. 5, but even if there are some gaps, the damage caused by birds and animals is prevented. There is an effect to do.

The perspective view which shows the related technique of the hard-to-fall snow tape for overhead electric wires which concerns on this invention. FIG. 2 is a side view showing a hard-to-snow snow wire using the hard-to-snow tape for overhead electric wires in FIG. 1. The perspective view which shows one Embodiment of the difficult snow accretion tape for overhead electric wires which concerns on this invention. FIG. 4 is a side view showing a hard-to-snow electric wire using the hard-to-snow tape for overhead electric wires in FIG. 3. The side view which shows one Embodiment of the optical fiber composite difficult snowfall electric wire which concerns on this invention. FIG. 6 is a cross-sectional view of the optical fiber composite hard-to-attach snow wire of FIG.

10 ： Snow-resistant tape for overhead electric wires
12: PTFE
14: Glass fiber tape
16: Fiber-reinforced PTFE tape
18: Adhesive
20 ： Snow-resistant wire
22: Overhead electric wire
24: PTFE mixed with carbon
26: Fiber-reinforced conductive PTFE tape
28: Conductive adhesive
30: Optical fiber cable

Claims (3)

A hard-to-snow tape that spirally winds around the outer periphery of an overhead electric wire, impregnated with carbon fiber tape and impregnated with PTFE (tetrafluoroethylene resin) that has been mixed with carbon to make it electrically conductive. On one side of a fiber-reinforced conductive PTFE tape that strengthens the tensile strength and tear strength to the extent that damage such as tearing does not occur when the suspension machine travels after being wound around A hard-to-snow tape for overhead electric wires, characterized by applying a conductive adhesive. A hard-to-snow-attached electric wire, wherein the non-snow-resistant tape for an overhead electric wire according to claim 1 is spirally wound around the outer periphery of the overhead electric wire with a conductive adhesive inside. An optical fiber cable is spirally wound around the outer periphery of the overhead electric wire, and the hard-covered tape for overhead electric wire according to claim 1 is wound around the outer periphery in a spiral shape with the conductive adhesive inside, thereby reducing icy snow. In addition, an optical fiber composite snow-resistant electric wire characterized by preventing damage caused by birds and beasts of the optical fiber cable.

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